Tripeptides are small chains of three amino acids linked together by peptide bonds. They are formed when two amino acids combine to create a dipeptide, and then a third amino acid attaches to this dipeptide. Tripeptides play important roles in biological processes, including acting as signaling molecules and contributing to protein synthesis. These compounds can be found in various foods, particularly in protein-rich sources like meat, dairy, and legumes. Tripeptides are also studied for their potential health benefits, such as antioxidant properties and support for the immune system, making them a topic of interest in nutrition and biochemistry.